From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754742AbYLOXYu (ORCPT ); Mon, 15 Dec 2008 18:24:50 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1752078AbYLOXYl (ORCPT ); Mon, 15 Dec 2008 18:24:41 -0500 Received: from cantor2.suse.de ([195.135.220.15]:50529 "EHLO mx2.suse.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751961AbYLOXYk (ORCPT ); Mon, 15 Dec 2008 18:24:40 -0500 Message-ID: <4946E72D.7020307@suse.com> Date: Mon, 15 Dec 2008 18:24:29 -0500 From: Jeff Mahoney Organization: SUSE Labs, Novell, Inc User-Agent: Thunderbird 2.0.0.18 (X11/20081112) MIME-Version: 1.0 To: Oliver Neukum Cc: linux-kernel@vger.kernel.org, reiserfs-devel@vger.kernel.org Subject: Re: locking checker reported on reiserfs in 2.6.28-rc8 References: <200812150959.33392.oliver@neukum.org> In-Reply-To: <200812150959.33392.oliver@neukum.org> X-Enigmail-Version: 0.95.2 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 Oliver Neukum wrote: > Hi, > > I got this in the log. No noticeable ill effect. 2.6.28-rc8 on x86_64. > Yup. I know about this one. Maybe I'll actually get around to pushing my reiserfs patchset for the 2.6.29 window. - -Jeff > > Dec 15 09:50:53 vanamonde kernel: > Dec 15 09:50:53 vanamonde kernel: ======================================================= > Dec 15 09:50:53 vanamonde kernel: [ INFO: possible circular locking dependency detected ] > Dec 15 09:50:53 vanamonde kernel: 2.6.28-rc8-default #3 > Dec 15 09:50:53 vanamonde kernel: ------------------------------------------------------- > Dec 15 09:50:53 vanamonde kernel: kmail/3204 is trying to acquire lock: > Dec 15 09:50:53 vanamonde kernel: (&sb->s_type->i_mutex_key#12){--..}, at: [] vfs_rmdir+0x8b/0x104 > Dec 15 09:50:53 vanamonde kernel: > Dec 15 09:50:53 vanamonde kernel: but task is already holding lock: > Dec 15 09:50:53 vanamonde kernel: (&REISERFS_SB(s)->xattr_dir_sem){----}, at: [] reiserfs_delete_xattrs+0xff/0x16b [reiserfs] > Dec 15 09:50:53 vanamonde kernel: > Dec 15 09:50:53 vanamonde kernel: which lock already depends on the new lock. > Dec 15 09:50:53 vanamonde kernel: > Dec 15 09:50:53 vanamonde kernel: > Dec 15 09:50:53 vanamonde kernel: the existing dependency chain (in reverse order) is: > Dec 15 09:50:53 vanamonde kernel: > Dec 15 09:50:53 vanamonde kernel: -> #1 (&REISERFS_SB(s)->xattr_dir_sem){----}: > Dec 15 09:50:53 vanamonde kernel: [] __lock_acquire+0x1291/0x15be > Dec 15 09:50:53 vanamonde kernel: [] lock_acquire+0x8d/0xba > Dec 15 09:50:53 vanamonde kernel: [] down_read+0x45/0x52 > Dec 15 09:50:53 vanamonde kernel: [] reiserfs_acl_chmod+0x69/0x1c0 [reiserfs] > Dec 15 09:50:53 vanamonde kernel: [] reiserfs_setattr+0x243/0x26b [reiserfs] > Dec 15 09:50:53 vanamonde kernel: [] notify_change+0x194/0x2da > Dec 15 09:50:53 vanamonde kernel: [] sys_fchmodat+0x91/0xbd > Dec 15 09:50:53 vanamonde kernel: [] sys_chmod+0x13/0x15 > Dec 15 09:50:53 vanamonde kernel: [] system_call_fastpath+0x16/0x1b > Dec 15 09:50:53 vanamonde kernel: [] 0xffffffffffffffff > Dec 15 09:50:53 vanamonde kernel: > Dec 15 09:50:53 vanamonde kernel: -> #0 (&sb->s_type->i_mutex_key#12){--..}: > Dec 15 09:50:53 vanamonde kernel: [] __lock_acquire+0xfa2/0x15be > Dec 15 09:50:53 vanamonde kernel: [] lock_acquire+0x8d/0xba > Dec 15 09:50:53 vanamonde kernel: [] mutex_lock_nested+0xf9/0x2a0 > Dec 15 09:50:53 vanamonde kernel: [] vfs_rmdir+0x8b/0x104 > Dec 15 09:50:53 vanamonde kernel: [] reiserfs_delete_xattrs+0x10b/0x16b [reiserfs] > Dec 15 09:50:53 vanamonde kernel: [] reiserfs_delete_inode+0x75/0x11b [reiserfs] > Dec 15 09:50:53 vanamonde kernel: [] generic_delete_inode+0xb8/0x145 > Dec 15 09:50:53 vanamonde kernel: [] generic_drop_inode+0x17/0x17c > Dec 15 09:50:53 vanamonde kernel: [] iput+0x61/0x65 > Dec 15 09:50:53 vanamonde kernel: [] do_unlinkat+0x103/0x159 > Dec 15 09:50:53 vanamonde kernel: [] sys_unlink+0x11/0x13 > Dec 15 09:50:53 vanamonde kernel: [] system_call_fastpath+0x16/0x1b > Dec 15 09:50:53 vanamonde kernel: [] 0xffffffffffffffff > Dec 15 09:50:53 vanamonde kernel: > Dec 15 09:50:53 vanamonde kernel: other info that might help us debug this: > Dec 15 09:50:53 vanamonde kernel: > Dec 15 09:50:53 vanamonde kernel: 1 lock held by kmail/3204: > Dec 15 09:50:53 vanamonde kernel: #0: (&REISERFS_SB(s)->xattr_dir_sem){----}, at: [] reiserfs_delete_xattrs+0xff/0x16b [reiserfs] > Dec 15 09:50:53 vanamonde kernel: > Dec 15 09:50:53 vanamonde kernel: stack backtrace: > Dec 15 09:50:53 vanamonde kernel: Pid: 3204, comm: kmail Not tainted 2.6.28-rc8-default #3 > Dec 15 09:50:53 vanamonde kernel: Call Trace: > Dec 15 09:50:53 vanamonde kernel: [] print_circular_bug_tail+0xb8/0xc3 > Dec 15 09:50:53 vanamonde kernel: [] __lock_acquire+0xfa2/0x15be > Dec 15 09:50:53 vanamonde kernel: [] lock_acquire+0x8d/0xba > Dec 15 09:50:53 vanamonde kernel: [] ? vfs_rmdir+0x8b/0x104 > Dec 15 09:50:53 vanamonde kernel: [] mutex_lock_nested+0xf9/0x2a0 > Dec 15 09:50:53 vanamonde kernel: [] ? vfs_rmdir+0x8b/0x104 > Dec 15 09:50:53 vanamonde kernel: [] ? vfs_rmdir+0x8b/0x104 > Dec 15 09:50:53 vanamonde kernel: [] ? _spin_unlock_irq+0x2b/0x37 > Dec 15 09:50:53 vanamonde kernel: [] ? may_delete+0x65/0x147 > Dec 15 09:50:53 vanamonde kernel: [] vfs_rmdir+0x8b/0x104 > Dec 15 09:50:53 vanamonde kernel: [] reiserfs_delete_xattrs+0x10b/0x16b [reiserfs] > Dec 15 09:50:53 vanamonde kernel: [] reiserfs_delete_inode+0x75/0x11b [reiserfs] > Dec 15 09:50:53 vanamonde kernel: [] ? _raw_spin_unlock+0x8e/0x94 > Dec 15 09:50:53 vanamonde kernel: [] ? reiserfs_delete_inode+0x0/0x11b [reiserfs] > Dec 15 09:50:53 vanamonde kernel: [] generic_delete_inode+0xb8/0x145 > Dec 15 09:50:53 vanamonde kernel: [] generic_drop_inode+0x17/0x17c > Dec 15 09:50:53 vanamonde kernel: [] iput+0x61/0x65 > Dec 15 09:50:53 vanamonde kernel: [] do_unlinkat+0x103/0x159 > Dec 15 09:50:53 vanamonde kernel: [] ? sysret_check+0x46/0x81 > Dec 15 09:50:53 vanamonde kernel: [] ? trace_hardirqs_on_caller+0xf6/0x11a > Dec 15 09:50:53 vanamonde kernel: [] ? trace_hardirqs_on_thunk+0x3a/0x3f > Dec 15 09:50:53 vanamonde kernel: [] ? do_path_lookup+0x47/0x1c8 > Dec 15 09:50:53 vanamonde kernel: [] sys_unlink+0x11/0x13 > Dec 15 09:50:53 vanamonde kernel: [] system_call_fastpath+0x16/0x1b > -- > To unsubscribe from this list: send the line "unsubscribe reiserfs-devel" in > the body of a message to majordomo@vger.kernel.org > More majordomo info at http://vger.kernel.org/majordomo-info.html - -- Jeff Mahoney SUSE Labs -----BEGIN PGP SIGNATURE----- Version: GnuPG v2.0.9 (GNU/Linux) Comment: Using GnuPG with SUSE - http://enigmail.mozdev.org iEYEARECAAYFAklG5ywACgkQLPWxlyuTD7KbxwCgiv/jhoRX+CSRVJRIfkF5F9CG +kIAnjqnenyryyKYnEi3wLi/fut7pDR9 =VWd/ -----END PGP SIGNATURE-----